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Typhoon Damrey (2017)

From Wikipedia, the free encyclopedia
This article is about the 2017 typhoon. For other storms of the same name, see List of storms named Damrey and List of storms named Ramil.

Typhoon Damrey (Ramil)
Typhoon Damrey approaching Vietnam on November 3
Meteorological history
FormedOctober 31, 2017
DissipatedNovember 4, 2017
Typhoon
10-minute sustained (JMA)
Highest winds130 km/h (80 mph)
Lowest pressure970 hPa (mbar); 28.64 inHg
Category 2-equivalent typhoon
1-minute sustained (SSHWS/JTWC)
Highest winds165 km/h (105 mph)
Lowest pressure967 hPa (mbar); 28.56 inHg
Overall effects
Fatalities142 total
Damage$1.03 billion (2017 USD)
Areas affectedPhilippines, Vietnam, Cambodia, Thailand
IBTrACSEdit this at Wikidata
Part of the 2017 Pacific typhoon season

Typhoon Damrey, known in the Philippines as Severe Tropical Storm Ramil, was a strong tropical cyclone that affected the Philippines and Vietnam during early November 2017. Damrey first originated as a tropical depression over the Philippine archipelago of Visayas on October 31. Emerging into the South China Sea a few days later, the system strengthened into the second deadliest and twenty-third named storm of the 2017 Pacific typhoon season. Rapidly intensifying, Damrey became the season's tenth typhoon on November 3, reaching its peak intensity as a Category 2 on the same day. Damrey made landfall over Khánh Hoà, Vietnam on November 4 and began to rapidly weaken, fully dissipating on November 5.

Strong winds, heavy rainfall and severe flooding in Central Vietnam caused by the typhoon killed 142 people and total damage reached over 22 trillion VND (US$1 billion).[1] Damrey made landfall in central Vietnam as the region hosted the 2017 APEC Summit in Da Nang.

Meteorological history

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Map plotting the storm's track and intensity, according to the Saffir–Simpson scale
Map key
Saffir–Simpson scale
  Tropical depression (≤38 mph, ≤62 km/h)
  Tropical storm (39–73 mph, 63–118 km/h)
  Category 1 (74–95 mph, 119–153 km/h)
  Category 2 (96–110 mph, 154–177 km/h)
  Category 3 (111–129 mph, 178–208 km/h)
  Category 4 (130–156 mph, 209–251 km/h)
  Category 5 (≥157 mph, ≥252 km/h)
  Unknown
Storm type
triangle Extratropical cyclone, remnant low, tropical disturbance, or monsoon depression

On October 31, the Japan Meteorological Agency (JMA) began monitoring a weak tropical depression located approximately 349 km (217 mi) to the west of Cebu.[2] Six hours later, the JMA began issuing advisories on the system after winds near its center had reached about 55 km/h (35 mph).[3] By about 21:00 UTC of the same day, the PAGASA had classified the system as a tropical depression, assigning the local name Ramil.[4] Around the same time, the Joint Typhoon Warning Center (JTWC) had issued a Tropical Cyclone Formation Alert on the system.[5]

By November 1, the JTWC had classified Ramil as a tropical depression, giving the international designation of 28W,[6] after convection around its low-level circulation center (LLCC) began to consolidate.[7] Thereafter, on November 2, the JMA upgraded the system to a tropical storm, receiving the name Damrey after it left the Philippine Area of Responsibility, becoming the twenty-third named storm of the season.[8] After the system entered a favorable environment for intensification, including continuous convective organization, the JTWC followed suit on upgrading it to a tropical storm.[9] Satellite imagery later depicted deep convective banding wrapping its LLCC, which caused Damrey to further strengthen.[10] By 18:00 UTC of the same day, Damrey had strengthened into a severe tropical storm on the JMA scale.[11] Shortly thereafter, the structure of the storm had become more symmetric, with much deeper convection and an improved radial outflow. Vertical wind shear was also very low at around 5 knots, which was favorable for intensification.[12]

The JMA upgraded Damrey to a typhoon early on November 3.[13] Three hours later, the JTWC followed suit and classified it as a Category 1-equivalent typhoon,[14] after animated satellite imagery depicted a "strengthening" system and a well-defined circular eye like feature.[15] At this stage, Damrey was located in conditions of low shear and warm sea-surface temperatures of 27–28 °C (81–82 °F) with good outflow.[16] The JMA had already declared that Damrey reached its peak intensity with 10-minute sustained winds of 130 km/h (80 mph) and a minimum barometric pressure of 970 hPa.[17] Six hours later, microwave images showed the eye becoming well-defined and an improved storm structure with a large centralized convective mass occluding to its center.[18] By 21:00 UTC, the JTWC upgraded Damrey to a Category 2-equivalent typhoon, reaching its peak strength with 1-minute sustained winds of 165 km/h (105 mph).[19] The JTWC issued their final advisory on the typhoon on 03:00 UTC on November 4, as it made landfall in Vạn Ninh District, Khánh Hòa Province, Vietnam. While over land, its convective structure began to deteriorate,[20] and three hours later the JMA downgraded Damrey to a severe tropical storm,[21] then to a tropical storm.[22] The JMA issued their final advisory on 12:00 UTC on November 4.[23] The agency continued to track the system as it fully dissipated on 00:00 UTC on November 5.[24]

Preparations and impact

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Deaths and damage from Typhoon Damrey
Countries Casualties Damage
(2017 USD) 		Ref
Dead Injured
Philippines 8 $20,000 [25][26]
Vietnam 107 342 $1.03 billion [27][28][29][30]
Cambodia 1
Totals: 116 342 $1.03 billion

Philippines

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On October 31, the PAGASA had raised a Tropical Cyclone Warning Signal #1, the lowest of five, to a few provinces, mostly over Western Visayas (Region VI) and the island of Palawan.[31] PAGASA had also warned residents of risky sea travel over the areas raised by the signal warning, including northern and eastern seaboards of Luzon.[32] Some domestic flights were canceled and trips to and from the Batangas Port were canceled during November 1.[33] Estimated rainfall around the 200 km radius of the system was classified from moderate to occasionally heavy.[34]

The National Disaster Risk Reduction and Management Council (NDRRMC) stated that 305 people had evacuated in the provinces of Camarines Norte, Camarines Sur and in Mindoro, while some 1,938 people were stranded in ports over in Palawan and Batangas.[26] Eight domestic flights were canceled on November 2 while the PAGASA suspended work and classes that day.[26] 14 landslides were recorded in the province of Camarines Sur, killing one person.[35] Three students also died in Busuanga, Palawan after drowning in a river.[36] One road and four bridges were also affected and not passable in the Cagayan Valley.[36] On November 4, the total number of fatalities rose to 8.[26] Torrential rains caused by the storm resulted in 2.5 ft of deep flooding, damaging agricultural crops. Agricultural damages were totaled to Php1.03 million (US$20,000) over in the city of Aurora Quezon on November 4.[25]

Vietnam

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Damage by Province in Vietnam
Province Damage (VND) Damage
(2017 USD) 		Ref
Khánh Hoà 14.7 trillion $647 million [37][38]
Phú Yên 3.5 trillion $154 million [39][40]
Quảng Nam 1.6 trillion $70.4 million [41]
Bình Định 866 billion $38.1 million [42]
Đắk Lắk 356 billion $15.7 million [43]
Lâm Đồng 92 billion $4.05 million [44]
Quảng Ngãi 1 trillion $44 million [45]
Quảng Trị 255.3 billion $11.2 million [46]
Thừa Thiên-Huế 830 billion $36.5 million [47]
Kon Tum 114.735 billion $5.05 million [48]
Gia Lai 50.7 billion $2.23 million [49][50][51][52]
Da Nang 44 billion $1.94 million [53]
Đắk Nông 15 billion $660,000 [54]
Totals: 23.42 trillion $1.03 billion [55]

By November 8, at least 106 people had been killed in Vietnam as a result of the typhoon, with 197 others injured and 25 missing.[27] Widespread flooding was reported, with more than 300,000 homes having been destroyed or damaged. UNICEF estimated at least four million people had been directly impacted by the storm and were in need of support.[27][28][29][56] The beach resort of Nha Trang was among the worst hit areas, 30,000 inhabitants and tourists had to be evacuated from the area.[57][58]

Typhoon Damrey was referenced in the U.S. President Donald Trump's statement at APEC 2017.[59] The Russian President Vladimir Putin gave US$5 million in relief funds due to the typhoon's severe damage in Vietnam.[60]

See also

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References

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  2. ^ "Warning and summary". www.webcitation.org. Archived from the original on May 23, 2024. Retrieved November 12, 2017.
  3. ^ "RSMC Tropical Cyclone Advisory TD". Japan Meteorological Agency. October 31, 2017. Archived from the original on May 23, 2024.
  4. ^ "LPA turns into Tropical Depression Ramil; Signal No. 1 up over 3 areas". GMA News. October 31, 2017.
  5. ^ "Typhoon WRNCEN Pearl Harbor HI". www.webcitation.org. Archived from the original on May 23, 2024. Retrieved November 12, 2017.
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  8. ^ "RSMC Tropical Cyclone Advisory TS 1723 DAMREY (1723) UPGRADED FROM TD". Japan Meteorological Agency. November 2, 2017. Archived from the original on May 23, 2024.
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  11. ^ "RSMC Tropical Cyclone Advisory STS 1723 DAMREY (1723) UPGRADED FROM TS". Japan Meteorological Agency. November 2, 2017. Archived from the original on May 23, 2024.
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  22. ^ "RSMC Tropical Cyclone Advisory TS 1723 DAMREY (1723) DOWNGRADED FROM STS". Japan Meteorological Agency. November 4, 2017. Archived from the original on May 23, 2024.
  23. ^ "RSMC Tropical Cyclone Advisory TD DOWNGRADED FROM TS 1723 DAMREY (1723)". Japan Meteorological Agency. November 4, 2017. Archived from the original on May 23, 2024.
  24. ^ "Warning and summary". www.webcitation.org. Archived from the original on May 23, 2024. Retrieved November 12, 2017.
  25. ^ a b Jason De Asis (November 4, 2017). "Ramil-triggered floods damage P1-M agri crops in Baler". Philippine Canadian Inuirer.
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  30. ^ 2017 VIETNAM Report
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  34. ^ "DSWD DROMIC Preparedness for Response Report #1 on Tropical Depression "RAMIL"" (PDF). Department of Social Welfare and Development. November 1, 2017.
  35. ^ Frank Peñones Jr. (November 2, 2017). "Villager killed in CamSur landslide". Manila Times.
  36. ^ a b Dempsey Reyes (November 2, 2017). "3 students drown in Palawan". Manila Times.
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  48. ^ "Trang chủ".
  49. ^ http://chupuh.gialai.gov.vn/tin-tuc/UBND-huyen/Lanh-%C4%91ao-huyen-Chu-Puh-Tham-va-ho-tro-15-gia-%C4%91inh.aspx [bare URL]
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  59. ^ VnExpress. "Toàn văn bài phát biểu của Tổng thống Trump tại APEC – VnExpress". Tin nhanh VnExpress (in Vietnamese). Retrieved November 12, 2017.
  60. ^ "Nga chuyển 5 triệu USD giúp đỡ Việt Nam khắc phục hậu quả bão số 12". VOV – ĐÀI TIẾNG NÓI VIỆT NAM. November 8, 2017. Retrieved November 12, 2017.
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